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Luminosity is an absolute measure of radiated electromagnetic energy per unit time, and is synonymous with the radiant power emitted by a light-emitting object. [1] [2] In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical objects. [3] [4]
luminosity The total amount of energy emitted per unit time by a star, galaxy, or other astronomical object. In SI units, luminosity is measured in joules per second or watts, and is often given in terms of astronomical magnitude. Luminosity is related to but distinct from visual brightness. lunar Of or relating to the Earth's Moon. lunar phase
Luminosity is the total amount of energy radiated by an object per unit time. Luminosity may also refer to: Luminosity (scattering theory) , the number of particles per unit area per unit time times the opacity of the target
Decreasing brightness with depth (underwater photo as example) Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light. [1]
Luminosity: a measurement of intensity or 'brightness'. In natural languages. Lexicology. Monolexemic color words are composed of individual lexemes, or root words ...
Several measures of light are commonly known as intensity: . Radiant intensity, a radiometric quantity measured in watts per steradian (W/sr); Luminous intensity, a photometric quantity measured in lumens per steradian (lm/sr), or candela (cd)
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If luminance and luminosity are supposed to be synonyms, shouldn't those two articles be merged? --Abdull 12:01, 23 Mar 2005 (UTC) Just because "luminance" is sometimes called "luminosity", that doesn't mean that "luminosity" can always be called "luminance". There are at least two different quantities involved here.